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Cr [Ar] 4s^1 3d^5

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What are the quantum numbers for the last electron in gold?

The last electron in gold is located in the 6s orbital. Therefore, the quantum numbers for this electron would be n=6 (principal quantum number), l=0 (azimuthal quantum number), ml=0 (magnetic quantum number), and ms=+1/2 (spin quantum number).


Write the four quantum numbers of last electron in boron atom B?

The four quantum numbers for the last electron in a boron atom (B) are: Principal quantum number (n) = 2 Azimuthal quantum number (l) = 1 Magnetic quantum number (ml) = 0 Spin quantum number (ms) = +1/2


What is the quantum number for the last electron in cobalt?

The last electron in cobalt has a quantum number of 3 for its principal quantum number (n), 4 for its azimuthal quantum number (l), -1 for its magnetic quantum number (m_l), and +1/2 for its spin quantum number (m_s).


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What quantum number is a whole number?

The first three quantum numbers (principle, angular momentum, magnetic) are all whole numbers. The last quantum number (spin) is either ½ or -½.


What are the quantum numbers for iodine?

Quantum numbers are a set of 4 imaginary numbers which explain the position and spin of electrons in an atom it can not explain an atom as a whole Iodine has 53 electrons so there are 53 sets of quantum numbers for Iodine.The above is correct. Assuming you meant to ask for the quantum numbers for the last electron added to Iodine, that would be n=5, l=1, m=0, s=1/2.


What are the four principal quantum numbers for krypton?

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What is the magnetic quantum number of chlorine?

Answer is at the end, skip to there if you just want the answer. Chlorine has 17 electrons. To find the four quantum numbers you first find N. Chlorine's electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^5 Chlorine's last electrons occupy the 3p subshell. Therefore N = 3 Next you find l (Lower Case L) Every subshell letter has a numerical value. S=0 P=1 D=2 F=3 Until you reach (N-1) Remembering the last electron ends in the 3p subshell, we find P=1 so l=1 Next we find the Magnetic Quantum Number which is anywhere from (-l)-0-(+l) in value. Finding this value requires more of an understanding of subshells. S subshells can hold 2 electrons, P subshells can hold 6, and D can hold 10. These occur in pairs of two. Cl's electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^5 Imagine each shell containing boxes that hold two electrons. Each box has a value. Since 3p holds 6 electrons, it will have 3 boxes of two. Fill the boxes with one electron each as an up arrow, and then add a second electron as a down arrow from left to right, until you have used all 17 of Chlorine's electrons. If you do that it will look like this. 3p [II] [II] [I ] The first box's Magnetic Quantum number will be -1 the middle will be 0 and the first will be +1. The last electron we drew was in the middle box, which equals 0. To find ms or the Spin Magnetic Number you imagine the up arrows as +1/2 and down arrows as -1/2. Because the last electron drawn was a down arrow, it equals -1/2. Consider all these numbers together and ... Chlorine is as follows: N:3 (Because of the 3 in 3p) l:1 (Because p equals 1) ml:0 (Because of where the final electron drawn ends) ms: -1/2 (Because the last electron drawn was a down arrow)


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Why is the electron configuration for copper 1s22s22p63s23p63d104s1 instead of 1s22s22p63s23p63d94s2?

The electron configuration for copper is 1s22s22p63s23p63d104s1 because copper preferentially fills its d orbital before the s orbital to achieve a more stable half-filled d shell. This configuration results in lower overall energy for the atom, making it more energetically favorable.


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What is a quantum of energy as defined by quantum mechanics?

exact, whole number amount of energy needed to move an electron to a higher energy level